With care these can be put onto a std TM plastic barrel, it will cut it's own thread

Nuprol silencer, 110 mm, both 14mm - and +

£10.00

Please note these barrel's should just drop into your pistol, but sometimes some fitting may be required, so if you are buying one and intend to fit it yourself, please be aware that you will have to file or do some other work to your barrels and possibly slide, If in doubt then get a competent gunsmith to fit it for you.